Yes I have that running I am trying to

[covert geyser]

Ok, so... you've identified the integration, but not the entities

Entities matter because the service calls depend on the entity

You can start however by reading https://www.home-assistant.io/integrations/simplisafe/

See if you can find an option in there for controlling the chime volume

[spare lily]

Thanks, Yes, Simplisafe.system_properties.chime_volume is in there. But I can’t figure out how I’m meant to read or set it using an automation.

[covert geyser]

You set it by calling the service

https://www.home-assistant.io/integrations/simplisafe/#simplisafesystem_properties

- service: simplisafe.system_properties
  data:
    chime_volume: 1

I would assume that the Alarm Control Panel entity has an attribute that's relevant

[plush wing]

Developer Tools: States

Open your Home Assistant instance and show your state developer tools

[covert geyser]

Go looking 😉